Oil filter adapter kit



Jan. 24, 1967 w. E. HARDCASTLE 3,300,049

OIL FILTER ADAPTER KIT Filed Oct. 14, 1964 WILLIAM E. HARDCASTLE %.MAM

A gmp United States Patent 3,300,049 OIL FILTER ADAPTER KIT William E. Hardcastle, 11 W. Main St, Mooresville, Ind. 46158 Filed Oct. 14, 1964, Ser. No. 403,734 2 Claims. (Cl. 210-232) The present invention relates to an oil filter adapter or replacement kit and the primary object of the invent-ion is to provide a kit through which one form of an oil filter and mounting therefor, conventionally installed in connection with a part of one commercial engine, may readily be replaced by another form of oil filter and mounting means in order to facilitate subsequent servicing and maintenance.

At least one commercial form of engine primarily designed for automobiles includes a part which is provided with inlet and outlet passages for connection in the oil circulating system of the engine, said part further being provided with means for operatively mounting thereon a type of oil filter which comprises a can containing replaceable filtering material, a removable cover for the can and a threaded stud secured to the engine part, axially penetrating the can and its cover and receiving a nut for securing the cover in place. Even in its conventional environment beneath an automobile hood, this installation is rather diflicult to service because of inaccessibility; and when that engine is mounted in a boat, filter servicing becomes next to impossible.

There is available on the market a disposable filter unit which is provided in one end wall with an axial, threaded port and with one or more eccentric ports, this whole unit being adapted to be mounted, in a proper environment, by threading its axial port onto a tube, being bodily disposable, by simply removing the entire unit from that tube, when the contained filter medium has become loaded to an objectionable degree.

According to the present invention, I have devised a kit adapted to replace the mounting means for the above mentioned can type filter and to adapt such an engine part to receive, instead, the disposable form of filter un-it above described.

Further objects of the invention will appear as the description proceeds.

To the accomplishment of the above and related o jects, my invention may be embodied in the form illustrated in the accompanying drawing, attention being called to the fact, however, that the drawing is illustrative only, and that change may be made in the specific construction illustrated and described, so long as the scope of the appended claims is not violated.

The single figure is a central sectional view showing the elements of my kit assembled with a conventional engine part of the type above described and showing a part of a known disposable filter unit operatively associated therewith.

The engine part in question comprises a casting formed with a blind, threaded socket 11 with which coaxially communicates an enlarged pocket 12 having a floor 13. A counterbore 14 coaxial with the pocket 12 defines the fioor 15 of an enlarged cavity 16 whose mouth is circumscribed by an outwardly facing shoulder 17. The block 10 is further formed with a passage 18 radially communicating with the cavity 16 and said block is formed with another passage 19 radially communicating with the pocket 12.

When the conventional can type filter and its mounting means have been removed from the block 10, my kit may be installed to cooperate with the block 10 in the manner illustrated.

A stud 20 is formed at one end with a reduced, threaded extension 21 proportioned and designed for threaded reception in the socket 11 and defining a shoulder 22 adapted to bear against the floor 13 of the pocket 12. Said stud is formed with axial bore 23 opening through the opposite end 24 of the stud 20 and communicating, near the first-named end of the stud, with one or more lateral ports 25. As is clearly illustrated, when the stud extension 21 is seated in the socket 11, the ports 25 will be located within the pocket 12 whose diameter is significantly greater than that of the stud 20.

My kit includes, as well, a frusto-conical 'block 26 formed with an axial bore. That portion 27 of the block bore which is nearer the smaller end 30 of the block preferably has a diameter substantially equal to that of the pocket 12, while the outer portion 28 of said block sbore has a significantly larger diameter whereby there is defined, within said bore, an outwardly facing seat 29.

The block 26 is received in the cavity 16 with its smaller end 30 in facing relation to the cavity floor 15; and an O-ri-n-g 31, preferably seated in an annular groove in the block end 30, is confined between said block end and said floor 15 in circumscribing relation to the bore portion 27 and the pocket 12.

At its larger end 32, the block 16 is preferably provided wit-h a peripheral flange 33 proportioned and designed to overlie the shoulder 17; and a gasket 34 is received between said fiange and said shoulder.

Another gasket 35 is sleeved on the outer end portion of the stud 20, and a nut 36 is threadedly mounted on said stud portion to press the gasket 35 sealingly against the seat 29. At the same time, of course, the nut 36 acts to retain the block 26 in position in the cavity 16, and said nut may be tightened to compress the O-ring 31 between the surfaces 30 and 15 and to clamp the gasket 34 between the flange 33 and the shoulder 17.

It will be apparent that the O-rin-g 31 and the gasket 35 cooperate to establish a seal between the chamber defined by the pocket 12 and the block bore portion 27, and the cavity 16.

The disposable filter unit 37 includes an end wall 38 provided with an axial, threaded port 39 communicating with the interior of a foraminous cylinder 40 which is surrounded by filtering material 41; and said end wall 38 is further formed with one or more eccentric ports 42. A compressible gasket 43 is carried on said end wall 38 in circumscribing relation to the ports 39 and 42; and when the unit 37 is mounted by threading the port 39 onto that threaded portion of the stud 20 which extends beyond the larger end 32 of the block 26, the gasket 43 will be pressed sealing-1y against said block end. The block 26 is formed with a passage 44 which opens through the frusto-conical surface of said block into communication with the cavity 16 and opens through the end 32 of the block into communication with the region circumscribed by the gasket 43.

It will be seen that, thus simply, a mounting for the disposable unit 37 upon the engine part 10 is provided of such character that, when the filter medium 41 has become objectionably loaded with solids, the whole unit 37 may be simply unscrewed from the stud end 24 and a new unit may be assembled with engine part by simply threading its port 39 onto the stud end 24. Merely so installing the new unit, with its gasket 43, establishes a filtering flow path from the passage 18 through the cavity 16 and the passage 44 and thence through the port or ports 42, through the filter medium 41 into the interior of the cylinder 40, through the bore 23 and ports 25 of the stud 20, into the chamber defined by the pocket 12 and the block bore portion 27 and so to the passage 19.

I claim as my invention:

1. An oil filter replacement kit comprising a stud provided at one end with a reduced, threaded extension defining a shoulder, said stud .being formed with an axial bore opening through the other end thereof and with a radial port near said one end, a frusto-conical block formed with a central :bore having one diameter near the smaller end of said block and a larger diameter near the larger end of said block to define an internal seat facing toward the larger end of said block, gasket means sleeved on said stud, a nut threadedly mounted on said stud and engaging said gasket means to press the same sealingly against said seat, said other end of said stud extending, when said gasket means is so seated, beyond the larger end of said block for threaded reception of a replaceable filter unit provided with an annular seal en-gageable with the larger end of said block to circumscribe said block bore, said hlock being formed with a passage opening at one end through the frusto-conical wall of said block and at its other end through the larger end of said block within the region circumscribed by said annular seal, and annular seal means carried by the smaller end of said block and circumscribing said 'block bore.

2. In combination with an engine part formed to provide a threaded socket, a pocket coaxially communicating with said socket and having a diameter larger than that of said socket, a counter'bore coaxially communicating with that end of said pocket remote from said socket to define a floor for a radially enlarged cavity opening away from said pocket, and an outwardly facing shoulder circumscribing the mouth of said cavity, said engine part further being formed with a first passage communicating with said pocket and with a second passage communieating with said cavity; a filter kit comprising a stud having a body whose diameter is less than that of said pocket and having a reduced, threaded extension at one end threadedly seated in said socket, said stud being formed with an axial :bore opening through the other end of said stud and further being formed with a lateral port communicating with said pocket, a frusto-conical block having an axial bore therethrough, said block being positioned in said cavity with its smaller end facing said cavity floor, gasket means disposed between said floor and said smaller end of said block and circumscri'bing said pocket and said block bore, said block bore (being internally provided with a shoulder facing the larger end of said :block, said stud extending through said block bore and beyond the larger end of said block and being threaded, a gasket sleeved on said stud, a nut threadedly mounted on said stud and pressing said gasket sealingly against said internal shoulder, further sealing means gripped between the larger end of said 'block and said outwardly facing shoulder, a disposable filter unit having an end wall provided with an axial, threaded port and with an eccentric port, said threaded port receiving the extending end of said stud to mount said filter unit with said end wall in facing relation to the larger end of said block, and a further gasket means sealingly disposed between said larger end of said block and said filter unit end wall and circumscribing said filter unit end wall ports, said block further being formed with a passage opening through the frusto-conical wall of said brlock into communication with said cavity and through the larger end of said block into communication with said filter unit end Wall eccentric References Cited by the Examiner UNITED STATES PATENTS 8/1961 Belgarde et al. 210-443 X 5/1965 Humbert.

REUBEN FRIEDMAN, Primary Examiner.

F. MEDLEY, Assistant Examiner 

2. IN COMBINATION WITH AN ENGINE PART FORMED TO PROVIDE A THREADED SOCKET, A POCKET COAXIALLY COMMUNICATING WITH SAID SOCKET AND HAVING A DIAMETER LARGER THAN THAT OF SAID SOCKET, A COUNTERBORE COAXIALLY COMMUNICATING WITH THAT END OF SAID POCKET REMOTE FROM SAID SOCKET TO DEFINE A FLOOR FOR A RADIALLY ENLARGED CAVITY OPENING AWAY FROM SAID POCKET, AND AN OUTWARDLY FACING SHOULDER CIRCUMSCRIBING THE MOUTH OF SAID CAVITY, SAID ENGINE PART FURTHER BEING FORMED WITH A FIRST PASSAGE COMMUNICATING WITH SAID POCKET AND WITH A SECOND PASSAGE COMMUNICATING WITH SAID CAVITY; A FILTER KIT COMPRISING A STUD HAVING A BODY WHOSE DIAMETER IS LESS THAN THAT OF SAID POCKET AND HAVING A REDUCED, THREADED EXTENSION AT ONE END THREADEDLY SEATED IN SAID SOCKET, SAID STUD BEING FORMED WITH AN AXIAL BORE OPENING THROUGH THE OTHER END OF SAID STUD AND FURTHER BEING FORMED WITH A LATERAL PORT COMMUNICATING WITH SAID POCKET, A FRUSTO-CONICAL BLOCK HAVING AN AXIAL BORE THERETHROUGH, SAID BLOCK BEING POSITIONED IN SAID CAVITY WITH ITS SMALLER END FACING SAID CAVITY FLOOR, GASKET MEANS DISPOSED BETWEEN SAID FLOOR AND SAID SMALLER END OF SAID BLOCK AND CIRCUMSCRIBING SAID POCKET AND SAID BLOCK BORE, SAID BLOCK BORE BEING INTERNALLY PROVIDED WITH A SHOULDER FACING THE LARGER END OF SAID BLOCK, SAID STUD EXTENDING THROUGH SAID BLOCK BORE AND BEYOND THE LARGER END OF SAID BLOCK AND BEING THREADED, A GASKET SLEEVED ON SAID STUD, A NUT THREADEDLY MOUNTED ON SAID STUD AND PRESSING SAID GASKET SEALINGLY AGAINST SAID INTERNAL SHOULDER, FURTHER SEALING MEANS GRIPPED BETWEEN THE LARGER END OF SAID BLOCK AND SAID OUTWARDLY FACING SHOULDER, A DISPOSABLE FILTER UNIT HAVING AN END WALL PROVIDED WITH AN AXIAL, THREADED PORT AND WITH AN ECCENTRIC PORT, SAID THREADED PORT RECEIVING THE EXTENDING END OF SAID STUD TO MOUNT SAID FILTER UNIT WITH SAID END WALL IN FACING RELATION TO THE LARGER END OF SAID BLOCK, AND A FURTHER GASKET MEANS SEALINGLY DISPOSED BETWEEN SAID LARGER END OF SAID BLOCK AND SAID FILTER UNIT END WALL AND CIRCUMSCRIBING SAID FILTER UNIT END WALL PORTS, SAID BLOCK FURTHER BEING FORMED WITH A PASSAGE OPENING THROUGH THE FRUSTO-CONICAL WALL OF SAID BLOCK INTO COMMUNCATION WITH SAID CAVITY AND THROUGH THE LARGER END OF SAID BLOCK INTO COMMUNICATION WITH SAID FILTER UNIT END WALL ECCENTRIC PORT WITHIN THE REGION CIRCUMSCRIBED BY SAID FURTHER GASKET MEANS. 